Datasheet
STM32H743xI Pin descriptions
DocID030538 Rev 3 81/226
Port A
PA1 4
JTCK-
SWCLK
--- - ----------
EVENT-
OUT
PA1 5 JTDI
TIM2_CH1/
TIM2_ETR
HRTIM_
FLT1
- HDMI_CEC
SPI1_NSS/
I2S1_WS
SPI3_NSS/
I2S3_WS
SPI6_NSS
UART4_
RTS
--UART7_TX---
EVENT-
OUT
Table 9. Port A alternate functions (continued)
Port
AF0 AF1 AF2 AF3 AF4 AF5 AF6 AF7 AF8 AF9 AF10 AF11 AF12 AF13 AF14 AF15
SYS
TIM1/2/16/1
7/LPTIM1/
HRTIM1
SAI1/TIM3/
4/5/12/
HRTIM1
LPUART/
TIM8/
LPTIM2/3/4/
5/HRTIM1/
DFSDM
I2C1/2/3/4/
USART1/
TIM15/
LPTIM2/
DFSDM/CEC
SPI1/2/3/4/
5/6/CEC
SPI2/3/SAI1/
3/I2C4/
UART4/
DFSDM
SPI2/3/6/
USART1/2/
3/6/UART7/
SDMMC1
SPI6/SAI2/
4/UART4/5/
8/LPUART/
SDMMC1/S
PDIFRX
SAI4/
FDCAN1/2/
TIM13/14/Q
UADSPI/F
MC/
SDMMC2/
LCD/
SPDIFRX
SAI2/4/
TIM8/
QUADSPI/
SDMMC2/
OTG1_HS/
OTG2_FS/
LCD
I2C4/
UART7/
SWPMI1/
TIM1/8/
DFSDM/
SDMMC2/
MDIOS/
ETH
TIM1/8/FMC
/SDMMC1/
MDIOS/
OTG1_FS/
LCD
TIM1/DCMI
/LCD/
COMP
UART5/
LCD
SYS
Table 10. Port B alternate functions
Port
AF0 AF1 AF2 AF3 AF4 AF5 AF6 AF7 AF8 AF9 AF10 AF11 AF12 AF13 AF14 AF15
SYS
TIM1/2/16/1
7/LPTIM1/
HRTIM1
SAI1/TIM3/
4/5/12/
HRTIM1
LPUART/
TIM8/
LPTIM2/3/4
/5/HRTIM1/
DFSDM
I2C1/2/3/4/
USART1/
TIM15/
LPTIM2/
DFSDM/
CEC
SPI1/2/3/4/5/
6/CEC
SPI2/3/SAI1
/3/I2C4/
UART4/
DFSDM
SPI2/3/6/
USART1/2/3
/6/UART7/S
DMMC1
SPI6/SAI2/
4/UART4/5/
8/LPUART/
SDMMC1/
SPDIFRX
SAI4/
FDCAN1/2/
TIM13/14/
QUADSPI/
FMC/
SDMMC2/
LCD/
SPDIFRX
SAI2/4/
TIM8/
QUADSPI/
SDMMC2/
OTG1_HS/
OTG2_FS/
LCD
I2C4/
UART7/
SWPMI1/
TIM1/8/
DFSDM/
SDMMC2/
MDIOS/
ETH
TIM1/8/FMC
/SDMMC1/
MDIOS/
OTG1_FS/
LCD
TIM1/DCM
I/LCD/
COMP
UART5/
LCD
SYS
Port B
PB0 - TIM1_CH2N TIM3_CH3
TIM8_CH2
N
--
DFSDM_CK
OUT
-
UART4_
CTS
LCD_R3
OTG_HS_
ULPI_D1
ETH_MII_
RXD2
--LCD_G1
EVENT-
OUT
PB1 - TIM1_CH3N TIM3_CH4
TIM8_CH3
N
--
DFSDM_
DATIN1
- - LCD_R6
OTG_HS_
ULPI_D2
ETH_MII_
RXD3
--LCD_G0
EVENT-
OUT
PB2 - - SAI1_D1 -
DFSDM_
CKIN1
- SAI1_SD_A
SPI3_
MOSI/I2S3_
SDO
SAI4_SD_
A
QUADSPI_
CLK
SAI4_D1
ETH_TX_
ER
---
EVENT-
OUT
PB3
JTDO/TRA
CESWO
TIM2_CH2
HRTIM_
FLT4
--
SPI1_SCK/
I2S1_CK
SPI3_SCK/
I2S3_CK
- SPI6_SCK
SDMMC2_
D2
- UART7_RX - - -
EVENT-
OUT
PB4 NJTRST
TIM16_
BKIN
TIM3_CH1
HRTIM_EE
V6
-
SPI1_MISO/
I2S1_SDI
SPI3_MISO/
I2S3_SDI
SPI2_NSS/I
2S2_WS
SPI6_
MISO
SDMMC2_
D3
- UART7_TX - - -
EVENT-
OUT
PB5 -
TIM17_
BKIN
TIM3_CH2
HRTIM_
EEV7
I2C1_SMBA
SPI1_MOSI/
I2S1_SDO
I2C4_SMBA
SPI3_MOSI/
I2S3_SDO
SPI6_
MOSI
CAN2_RX
OTG_HS_
ULPI_D7
ETH_PPS_
OUT
FMC_
SDCKE1
DCMI_D1
0
UART5_
RX
EVENT-
OUT
PB6 -
TIM16_CH1
N
TIM4_CH1
HRTIM_
EEV8
I2C1_SCL HDMI_CEC I2C4_SCL
USART1_
TX
LPUART1_
TX
CAN2_TX
QUADSPI_
BK1_NCS
DFSDM_
DATIN5
FMC_SDNE
1
DCMI_D5
UART5_
TX
EVENT-
OUT
PB7 -
TIM17_CH1
N
TIM4_CH2
HRTIM_
EEV9
I2C1_SDA - I2C4_SDA
USART1_
RX
LPUART1_
RX
CAN2_
TXFD
-
DFSDM_
CKIN5
FMC_NL
DCMI_
VSYNC
-
EVENT-
OUT
PB8 - TIM16_CH1 TIM4_CH3
DFSDM_
CKIN7
I2C1_SCL -
I2C4_SCL
SDMMC1_
CKIN
UART4_RX CAN1_RX
SDMMC2_
D4
ETH_MII_
TXD3
SDMMC1_
D4
DCMI_D6 LCD_B6
EVENT-
OUT
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